But, unless you are not in a building, no one is going to use W3W for these. We have a decent addressing system (as does pretty much everywhere in the developed world).The marketing is to get the public to download it and then, as they have it, to use it for contact with those who will pay - like UBER Eats, Just Eat, Deliveroo who are their target for paying customers.
And even if you want delivery to a park/field there's loads of other methods to give your location via your phone's GPS - UBER certainly has a system integrated into the app (not tried the other apps).
We're the product in those two cases.If you think that commercial interests don't give apps for free think again - Facebook, twitter........
I remember the days when free Spotify was unlimited plays and about an ad about every 30-45 minutes and then it became an ad every roughly 5-10 minutes and you could only play a particular song a set number of times before you couldn't play it again as they needed to nudge people onto the paid version! I remember the days when news/comment sites didn't limit your free articles (or at least were more generous with the limit), or make you turn your ad-blocker off, or both - as they now do.
Free access to internet stuff decays as:
1) they become well used and established in the market - rather than trying to build a name, they reach the point where they try and use their name to make money.
2) the company realises they need to monetise it or the investors will be mad.
If W3W is reliant on people using it in conjunction with apps that already have different ways of doing location already, then it's a dead-end technology that will go bust and disappear unless some philanthropist buys the database at a knock down rate and makes it open access, or the developing world addressing makes enough money.